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https://www.readbyqxmd.com/read/28092438/biofunctionalization-of-nerve-interface-via-biocompatible-polymer-roughened-pt-black-on-cuff-electrode-for-chronic-recording
#1
Yi Jae Lee, Han-Jun Kim, Ji Yoon Kang, Sun Hee Do, Soo Hyun Lee
Peripheral nerve cuff electrodes with roughened Pt black (BPt) are coated with polyethylene glycol (PEG) and Nafion (NF). Although the influence of coated PEG and Nafion on roughened BPt on the electrical properties is weak, the cuff electrode with BPt/PEG and BPt/Nafion exhibits some very important properties. For example, it markedly decreases interfacial impedance, increases charge storage capacity (CSC) due to retaining the BPt surface structure, good stability without exfoliation in repetitive cyclic voltammetry scanning because it is protected by PEG or Nafion coating...
January 16, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28092370/api5-confers-cancer-stem-cell-like-properties-through-the-fgf2-nanog-axis
#2
K-H Song, H Cho, S Kim, H-J Lee, S J Oh, S R Woo, S-O Hong, H S Jang, K H Noh, C H Choi, J-Y Chung, S M Hewitt, J-H Kim, M Son, S-H Kim, B I Lee, H-C Park, Y-K Bae, T W Kim
Immune selection drives the evolution of tumor cells toward an immune-resistant and cancer stem cell (CSC)-like phenotype. We reported that apoptosis inhibitor-5 (API5) acts as an immune escape factor, which has a significant role in controlling immune resistance to antigen-specific T cells, but its functional association with CSC-like properties remains largely unknown. In this study, we demonstrated for the first time that API5 confers CSC-like properties, including NANOG expression, the frequency of CD44-positive cells and sphere-forming capacity...
January 16, 2017: Oncogenesis
https://www.readbyqxmd.com/read/28091938/distinguishing-features-of-acute-vogt-koyanagi-harada-disease-and-acute-central-serous-chorioretinopathy-on-optical-coherence-tomography-angiography-and-en-face-optical-coherence-tomography-imaging
#3
Kanika Aggarwal, Aniruddha Agarwal, Ankit Deokar, Sarakshi Mahajan, Ramandeep Singh, Reema Bansal, Aman Sharma, Mangat R Dogra, Vishali Gupta
BACKGROUND: The aim of this study is to determine the differences in optical coherence tomography angiography (OCTA) features of acute Vogt-Koyanagi-Harada disease (VKH) and acute central serous chorioretinopathy (CSC). Clinical and imaging data of patients with acute CSC and VKH in a tertiary-care institute were analyzed. Multimodal imaging including fluorescein angiography, indocyanine green angiography (ICGA), and enhanced-depth imaging OCT were performed. OCTA images were analyzed for alterations in retinochoroidal microvasculature...
December 2017: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/28089910/glioblastoma-cancer-stem-cells-evade-innate-immune-suppression-of-self-renewal-through-reduced-tlr4-expression
#4
Alvaro G Alvarado, Praveena S Thiagarajan, Erin E Mulkearns-Hubert, Daniel J Silver, James S Hale, Tyler J Alban, Soumya M Turaga, Awad Jarrar, Ofer Reizes, Michelle S Longworth, Michael A Vogelbaum, Justin D Lathia
Tumors contain hostile inflammatory signals generated by aberrant proliferation, necrosis, and hypoxia. These signals are sensed and acted upon acutely by the Toll-like receptors (TLRs) to halt proliferation and activate an immune response. Despite the presence of TLR ligands within the microenvironment, tumors progress, and the mechanisms that permit this growth remain largely unknown. We report that self-renewing cancer stem cells (CSCs) in glioblastoma have low TLR4 expression that allows them to survive by disregarding inflammatory signals...
December 27, 2016: Cell Stem Cell
https://www.readbyqxmd.com/read/28088791/sinomenine-hydrochloride-inhibits-breast-cancer-metastasis-by-attenuating-inflammation-related-epithelial-mesenchymal-transition-and-cancer-stemness
#5
Xiao Li, Pingping Li, Chao Liu, Yu Ren, Xiaojiang Tang, Ke Wang, Jianjun He
Sinomenine hydrochloride (SH) has been investigated for its anti-tumor growth effect. We have previously reported that SH inhibited breast cancer cell proliferation via MAPKs signaling. However, whether SH could inhibit tumor metastasis has not been fully explored. In this study, we found that SH suppressed the metastasis potential of breast cancer cells. The wound healing and transwell assays showed that SH inhibited the migration and invasion ability of both 4T1 and MDA-MB-231 breast cancer cells. The orthotopic mouse model of 4T1 and the experimental mouse model of MDA-MB-231-luc (MDA-MB-231 cell line expressing firefly luciferase) demonstrated that SH treatment inhibited breast cancer metastasis by inhibiting epithelial-mesenchymal transition (EMT) and cancer stem cell (CSC) properties without obvious hepatotoxicity and renal toxicity...
January 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076950/single-amino-acid-variant-profiles-of-subpopulations-in-the-mcf-7-breast-cancer-cell-line
#6
Zhijing Tan, Song Nie, Sean P McDermott, Max S Wicha, David M Lubman
Cancers are initiated and developed from a small population of stem-like cells termed cancer stem cells (CSCs). There is heterogeneity among this CSC population that leads to multiple subpopulations with their own distinct biological features and protein expression. The protein expression and function may be impacted by amino acid variants that can occur largely due to single nucleotide changes. We have thus performed proteomic analysis of breast CSC subpopulations by mass spectrometry to study the presence of single amino acid variants (SAAVs) and their relation to breast cancer...
January 11, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28076844/sulforaphane-inhibits-cancer-stem-like-cell-properties-and-cisplatin-resistance-through-mir-214-mediated-downregulation-of-c-myc-in-non-small-cell-lung-cancer
#7
Qian-Qian Li, You-Ke Xie, Yue Wu, Lin-Lin Li, Ying Liu, Xiao-Bo Miao, Qiu-Zhen Liu, Kai-Tai Yao, Guang-Hui Xiao
We herein report that sulforaphane (SFN), a potent anti-cancer and well-tolerated dietary compound, inhibits cancer stem-like cell (CSC) properties and enhances therapeutic efficacy of cisplatin in human non-small cell lung cancer (NSCLC). SFN exerted these functions through upregulation of miR-214, which in turn targets the coding region of c-MYC. This finding was further corroborated by our observations that plasmid or lentiviral vector-mediated expression of 3'UTR-less c-MYC cDNA and cisplatin- or doxorubicin-induced endogenous c-MYC accumulation was similarly suppressed by either SFN or miR-214...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076442/subfoveal-choroidal-thickness-in-central-serous-chorioretinopathy-a-meta-analysis
#8
Guohai Chen, Radouil Tzekov, Wensheng Li, Fangzheng Jiang, Sihong Mao, Yuhua Tong
PURPOSE: To evaluate the relationship between subfoveal choroidal thickness (SFCT) and eyes with central serous chorioretinopathy (CSC) versus fellow or control eyes. METHODS: We performed a meta-analysis using databases including PubMed, Embase and ISI Web of Science to find relevant studies. Weighted mean difference (WMD) was calculated for the SFCT in CSC eyes, the unaffected fellow eyes and normal controls. RESULTS: Twelve studies were selected for this meta-analysis, including 1108 eyes (397 CSC eyes, 228 unaffected fellow eyes and 483 eyes of normal controls)...
2017: PloS One
https://www.readbyqxmd.com/read/28075524/topk-t-lak-cell-originated-protein-kinase-inhibitor-exhibits-growth-suppressive-effect-on-small-cell-lung-cancer
#9
Jae-Hyun Park, Hiroyuki Inoue, Taigo Kato, Makda Zewde, Takashi Miyamoto, Yo Matsuo, Ravi Salgia, Yusuke Nakamura
T-lymphokine-activated killer cell-originated protein kinase (TOPK) plays critical roles in cancer cell proliferation as well as maintenance of cancer stem cells (CSC). Small cell lung cancer (SCLC) has highly aggressive phenotype, reveals early spread to distant sites, and results in dismal prognosis with little effective treatment. In this study, we demonstrate that TOPK expression was highly upregulated in both SCLC cell lines and primary tumors. Similar to siRNA-mediated TOPK knockdown effects, treatment with a potent TOPK inhibitor, OTS514, effectively suppressed growth of SCLC cell lines (IC50 ; 0...
January 11, 2017: Cancer Science
https://www.readbyqxmd.com/read/28075453/mir-375-inhibits-cancer-stem-cell-phenotype-and-tamoxifen-resistance-by-degrading-hoxb3-in-human-er-positive-breast-cancer
#10
Hui Fu, Lei Fu, Chao Xie, Wen-Shu Zuo, Yan-Song Liu, Mei-Zhu Zheng, Jin-Ming Yu
Cancer stem cell (CSC) formation and epithelial-mesenchymal transition (EMT) are pivotal events in tumor cell invasion and metastasis. They have been shown to occur in resistance to tamoxifen. Moreover, microRNAs (miRNAs) have been associated with CSCs, EMT as well as tamoxifen resistance. Studying molecular mechanism of CSCs, EMT as well as tamoxifen resistance will help us to further understand the pathogenesis and progression of the disease and offer new targets for effective therapies. In the present study, we showed that miR-375 inhibits CSC traits in breast cancer MCF-7 cells...
January 9, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28064442/tumor-derived-spheroids-relevance-to-cancer-stem-cells-and-clinical-applications
#11
REVIEW
Tatsuya Ishiguro, Hirokazu Ohata, Ai Sato, Kaoru Yamawaki, Takayuki Enomoto, Koji Okamoto
Recently, many types of in vitro three-dimensional (3D) culture systems have been developed to recapitulate the in vivo growth conditions of cancer. The cancer 3D culture methods aim to preserve the biological characteristics of original tumors better than conventional two-dimensional (2D) monolayer cultures, and include tumor-derived organoids, tumor-derived spheroids, organotypic multicellular spheroids, and multicellular tumor spheroids. The 3D culture methods differ in terms of cancer cell sources, protocols for cell handling, and the required time intervals...
January 8, 2017: Cancer Science
https://www.readbyqxmd.com/read/28064441/analysis-of-the-origin-of-anaplastic-pancreatic-cancer-and-the-mechanism-of-its-dedifferentiation
#12
Kotaro Miura, Kenjiro Kimura, Ryosuke Amano, Sadaaki Yamazoe, Go Ohira, Kohei Nishio, Naoki Kametani, Kosei Hirakawa, Masaichi Ohira
BACKGROUND: We researched the origin and progression of anaplastic pancreatic cancer (APC) from the viewpoints of cell lineage, epithelial-mesenchymal transition (EMT) and cancer stem like cells (CSC). METHODS: Using specimens from patients with APC and differentiated pancreatic ductal adenocarcinoma (PDAC), expression of sex-determining region Y box 9 (SOX9), E-cadherin, vimentin, ZEB-1, Snail, N-cadherin, CD24 and CD44 was estimated using immunohistochemistry...
January 8, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28064436/mir-181b-5p-ets1-and-c-met-pathway-exacerbates-the-prognosis-of-pancreatic-ductal-adenocarcinoma-after-radiation-therapy
#13
Hideo Tomihara, Daisaku Yamada, Hidetoshi Eguchi, Yoshifumi Iwagami, Takehiro Noda, Tadafumi Asaoka, Hiroshi Wada, Koichi Kawamoto, Kunihito Gotoh, Yutaka Takeda, Masahiro Tanemura, Masaki Mori, Yuichiro Doki
Preoperative chemoradiation therapy (CRT) for pancreatic ductal adenocarcinoma (PDAC) has emerged as a reasonable strategy that shows good prognostic impact. However, after preoperative CRT, resected specimens exhibited remnant tumor cells, which indicated that some tumor cells had acquired or were selected for resistance to CRT. Recently, two oncological mechanisms, the epithelial-mesenchymal transition (EMT) and the presence of cancer stem cells (CSCs) were reported to be associated with resistance in various cancers...
January 8, 2017: Cancer Science
https://www.readbyqxmd.com/read/28064403/knockdown-of-clusterin-alters-mitochondrial-dynamics-facilitates-necrosis-in-camptothecin-induced-cancer-stem-cells
#14
Parthasarathy Arumugam, Annie Samson, Jieun Ki, Joon Myong Song
The existence of a well-established drug resistance mechanism in cancer stem cells (CSC) complicates the cancer treatment. Clusterin (CLU) plays a key role in maintaining the integrity of endoplasmic reticulum (ER) during drug-induced stress. Hence, silencing the CLU could significantly reduce the inherent drug resistance mechanism of CSC. The combination of drug-induced cytotoxicity, as well as the suppression of drug resistance in CSC, could circumvent the recurrence capability of the tumor. In the present study, camptothecin (CPT)-induced apoptosis and necrosis in CSC with and without siCLU treatment were simultaneously measured using Qdot-based total internal reflection fluorescence microscope (TIRF)...
January 7, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28063988/engineered-extracellular-microenvironment-with-a-tunable-mechanical-property-for-controlling-cell-behavior-and-cardiomyogenic-fate-of-cardiac-stem-cells
#15
Min-Young Choi, Jong-Tae Kim, Won-Jin Lee, Yunki Lee, Kyung Min Park, Young-Il Yang, Ki Dong Park
: Endogenous cardiac stem cells (CSCs) are known to play a certain role in the myocardial homeostasis of the adult heart. The extracellular matrix (ECM) surrounding CSCs provides mechanical signals to regulate a variety of cell behaviors, yet the impact in the adult heart of these mechanical properties of ECM on CSC renewal and fate decisions is mostly unknown. To elucidate CSC mechanoresponses at the individual cell and myocardial level, we used the sol-to-gel transitional gelatin-poly(ethylene glycol)-tyramine (GPT) hydrogel with a tunable mechanical property to construct a three-dimensional (3D) matrix for culturing native myocardium and CSCs...
January 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28062705/novel-p21-activated-kinase-4-pak4-allosteric-modulators-overcome-drug-resistance-and-stemness-in-pancreatic-ductal-adenocarcinoma
#16
Amro Aboukameel, Irfana Muqbil, William Senapedis, Erkan Baloglu, Yosef Landesman, Sharon Shacham, Michael Kauffman, Philip A Philip, Ramzi M Mohammad, Asfar S Azmi
The p21-activated kinase 4 (PAK4) is a key downstream effector of the Rho family GTPases and is found to be overexpressed in pancreatic ductal adenocarcinoma (PDAC) cells but not in normal human pancreatic ductal epithelia (HPDE). Gene copy number amplification studies in PDAC patient cohorts confirmed PAK4 amplification making it an attractive therapeutic target in PDAC. We investigated the antitumor activity of novel PAK4 allosteric modulators (PAM) on a panel of PDAC cell lines and chemotherapy-resistant flow-sorted PDAC cancer stem cells (CSC)...
January 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28062556/the-cellular-origin-and-evolution-of-breast-cancer
#17
Mei Zhang, Adrian V Lee, Jeffrey M Rosen
In this review, we will discuss how the cell of origin may modulate breast cancer intratumoral heterogeneity (ITH) as well as the role of ITH in the evolution of cancer. The clonal evolution and the cancer stem cell (CSC) models, as well as a model that integrates clonal evolution with a CSC hierarchy, have all been proposed to explain the development of ITH. The extent of ITH correlates with clinical outcome and reflects the cellular complexity and dynamics within a tumor. A unique subtype of breast cancer, the claudin-low subtype that is highly resistant to chemotherapy and most closely resembles mammary epithelial stem cells, will be discussed...
January 6, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28061479/mir-24-induces-chemotherapy-resistance-and-hypoxic-advantage-in-breast-cancer
#18
Giuseppina Roscigno, Ilaria Puoti, Immacolata Giordano, Elvira Donnarumma, Valentina Russo, Alessandra Affinito, Assunta Adamo, Cristina Quintavalle, Matilde Todaro, Maria dM Vivanco, Gerolama Condorelli
Breast cancer remains one of the leading causes of cancer mortality among women. It has been proved that the onset of cancer depends on a very small pool of tumor cells with a phenotype similar to that of normal adult stem cells. Cancer stem cells (CSC) possess self-renewal and multilineage differentiation potential as well as a robust ability to sustain tumorigenesis. Evidence suggests that CSCs contribute to chemotherapy resistance and to survival under hypoxic conditions. Interestingly, hypoxia in turn regulates self-renewal in CSCs and these effects may be primarily mediated by hypoxic inducible factors (HIFs)...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28059452/shp2-promotes-liver-cancer-stem-cell-expansion-by-augmenting-%C3%AE-catenin-signaling-and-predicts-chemotherapeutic-response-of-patients
#19
Daimin Xiang, Zhuo Cheng, Hui Liu, Xue Wang, Tao Han, Wen Sun, Xiaofeng Li, Wen Yang, Cheng Chen, Mingyang Xia, Na Liu, Shengyong Yin, Guangzhi Jin, Terence Lee, Liwei Dong, Heping Hu, Hongyang Wang, Jin Ding
: Src-homology 2 domain-containing phosphatase 2 (Shp2) has been reported to play an important role in the maintenance and self-renewal of embryonic and adult stem cells, but its role in cancer stem cells (CSCs) remains obscure. Herein, we observed high expression of Shp2 in both chemoresistant hepatocellular carcinomas (HCCs) and recurrent HCCs from patients. A remarkable increase of Shp2 was detected in sorted epithelial cell adhesion molecule-positive or cluster of differentiation 133-positive liver CSCs and in CSC-enriched hepatoma spheroids from patients...
November 5, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28055101/high-resolution-imaging-of-intraretinal-structures-in-active-and-resolved-central-serous-chorioretinopathy
#20
Ryan N Vogel, Christopher S Langlo, Drew Scoles, Joseph Carroll, David V Weinberg, Judy E Kim
Purpose: We improved our understanding of central serous chorioretinopathy (CSC), we performed an analysis of noninvasive, high-resolution retinal imaging in patients with active and resolved CSC. Methods: Adaptive optics scanning light ophthalmoscopy (AOSLO) and spectral-domain optical coherence tomography (SD-OCT) were performed on five subjects with CSC. A custom AOSLO system was used to simultaneously collect confocal and split-detector images. Spectral domain-OCT volume scans were used to create en face views of various retinal layers, which then were compared to montaged AOSLO images after coregistration...
January 1, 2017: Investigative Ophthalmology & Visual Science
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